CVE-2025-15530Public exploitNetwork attack vectorHinoki check available

SGW-C crash via invalid bearer assertion

Published Jan 17, 2026 · Updated Jan 17, 2026

Reachable assertion in Open5GS 2.7.0 through 2.7.6 allows remote attackers to crash SGW-C via a crafted S11 GTPv2-C request. The S11 handler looks up an EPS bearer ID from a Create Indirect Data Forwarding Tunnel Request and asserts that the returned bearer pointer is non-null. The attacker must reach SGW-C's GTP-C service and establish a session before supplying an EBI with no matching bearer, which aborts the SGW-C process.

CVSS severity5.3
Medium
EPSS probability0.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Reachable assertion in Open5GS 2.7.0 through 2.7.6 allows remote attackers to crash SGW-C via a crafted S11 GTPv2-C request. The S11 handler looks up an EPS bearer ID from a Create Indirect Data Forwarding Tunnel Request and asserts that the returned bearer pointer is non-null. The attacker must reach SGW-C's GTP-C service and establish a session before supplying an EBI with no matching bearer, which aborts the SGW-C process.

The record

CVE
CVE-2025-15530
Published
Jan 17, 2026
Updated
Jan 17, 2026
Vendor
Open5GS
Product
Open5GS
Classifications
CWE-617, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.7.0
  2. Affected versionversion=2.7.1
  3. Affected versionversion=2.7.2
  4. Affected versionversion=2.7.3
  5. Affected versionversion=2.7.4
  6. Affected versionversion=2.7.5
  7. Affected versionversion=2.7.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Open5GS · Open5GSversion=2.7.0; version=2.7.1; version=2.7.2; version=2.7.3; version=2.7.4; version=2.7.5; version=2.7.6

Published CVSS scores

5.5VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
5.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
5.0VulDBAV:N/AC:L/Au:N/C:N/I:N/A:P
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-617Reachable Assertion
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

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Technologies

Your stack

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Your stack

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